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On CBS, Big Brother was down 18% from last Thursday's premiere. It still had 6.48 million viewers to its name, though, and was the highest-rated show for adults 18-49. A dip is expected after a premiere episode, so I don't expect Big Brother to wane too much more in the coming weeks. We'll see how long it takes for everyone except the diehard fans to get burned out and move on.

ABC struggled last night, with all of its fresh programming ending the night with middling ratings. Wipeout fell 10%, with 6.37 million viewers. Expedition Impossible dropped a whopping 24%, with 4.64 million viewers. And Rookie Blue (which has been renewed for a third season) dropped 7%, with 5.33 million viewers.

On FOX, So You Think You Can Dance fell slightly versus last week's Thursday results show, with 5.21 million viewers.